Biosimilars

On June 30, Blueprint Medicines Corp. revealed that partner Genentech USA, Inc., a member of the Roche Group, will voluntarily withdraw Gavreto’s (pralsetinib) indication for the treatment of people at least 12 years old with advanced or metastatic rearranged during transfection (RET)-mutant medullary thyroid cancer who require systemic therapy. The FDA gave the indication accelerated approval on Dec. 1, 2020. Genentech said the decision, which was made in consultation with the FDA, was not due to new safety or efficacy data but rather due to the “feasibility” of conducting the Phase III confirmatory trial required for full approval. Confirmatory studies to convert the other indications of the kinase inhibitor, all of which have accelerated approval, to full approval are ongoing.

The introduction of five Herceptin (trastuzumab) biosimilars contributed to a 21% decline in the cancer drug’s average sales price from the first quarter of 2019 to the second quarter of 2022, according to a study published this month in Health Affairs. Alice J. Chen, the study’s lead author, tells AIS Health that the adoption of Herceptin biosimilars and subsequent price decrease of the biologic is “a pretty promising case” at a time when biosimilars’ cost-saving potential is generating considerable interest.

However, Chen says the uptake of other drugs’ biosimilars has varied, leading to more modest price declines and questions about how much the health care industry will save as a flood of biosimilars becomes available in the U.S. in the coming years.

As potentially as many as eight biosimilars of AbbVie Inc.’s Humira (adalimumab) could launch onto the U.S. market in July, the manufacturer of one of those drugs recently revealed that it would launch its product at a huge discount not seen before in the United States for biosimilar agents. While that highly competitive price certainly will appeal to some payers, commercial payers that favor high-list-price/high-rebate therapies are likely to not cover the agent, say industry experts. In addition, it remains to be seen whether the move signals the beginning of more affordable biologics or the destabilization of the market, they maintain.

On June 1, Coherus BioSciences, Inc. revealed that it would launch Yusimry (adalimumab-aqvh) in July with a list price of $995 per carton — an 85% discount off reference drug Humira’s $6,922 price tag. The tumor necrosis factor (TNF) inhibitor, first approved Dec. 17, 2021, is a low-concentration, citrate-free version of Humira, and it has approval for most of the reference drug’s indications: (1) adults with moderately to severely active rheumatoid arthritis, (2) people at least 2 years old with moderately to severely active juvenile idiopathic arthritis, (3) adults with active psoriatic arthritis, (4) adults with active ankylosing spondylitis, (5) people at least 6 years old with moderately to severely active Crohn’s disease, (6) adults with moderately to severely active ulcerative colitis, (7) adults with moderate to severe chronic plaque psoriasis who are candidates for systemic therapy or phototherapy and when other systemic therapies are medically less appropriate, and (8) adults with moderate to severe hidradenitis suppurativa.

Amneal Pharmaceuticals, Inc. launched Fylnetra (pegfilgrastim-pbbk), the company said May 16. The granulocyte colony-stimulating factor is the sixth biosimilar of Amgen Inc.’s Neulasta (pegfilgrastim) to launch in the U.S. The FDA approved the drug on May 26, 2022, to decrease the incidence of infection, as manifested by febrile neutropenia, in patients with non-myeloid malignancies receiving myelosuppressive anti-cancer drugs associated with a clinically significant incidence of febrile neutropenia. Its J-code is Q5130. It is the third biosimilar that Amneal has launched in the U.S.

Amgen settled a patent infringement lawsuit (No. 22-cv-1549) with Janssen Biotech Inc., a division of Johnson & Johnson, over a proposed biosimilar of Stelara (ustekinumab), Amgen revealed May 23. Stelara, a human interleukin-12 and -23 antagonist, is indicated for adults with moderate-to-severe plaque psoriasis, moderately to severely active Crohn’s disease and moderately to severely active ulcerative colitis, as well as people at least 6 years old with moderate-to-severe plaque psoriasis who are candidates for phototherapy or systemic therapy and people at least 6 with active psoriatic arthritis. The FDA first approved it on Sept. 25, 2009. Amgen said the settlement will allow its biosimilar to launch “no later than” Jan. 1, 2025.

One manufacturer recently revealed that it would launch its biosimilar of AbbVie Inc.’s Humira (adalimumab) at a huge discount not seen before in the U.S. While it almost certainly will be able to get some uptake in a market that’s about to become highly competitive, commercial payers who favor high list price/high rebate therapies are likely to not cover the agent, say industry experts.

On June 1, Coherus BioSciences, Inc. revealed that it would launch Yusimry (adalimumab-aqvh) in July with a list price of $995 per carton — an 85% discount off reference drug Humira’s (adalimumab) $6,922 price tag. The tumor necrosis factor (TNF) inhibitor, first approved Dec. 17, 2021, is a low concentration, citrate-free version of Humira, and it has approval for most of the reference drug’s indications: (1) adults with moderately to severely active rheumatoid arthritis, (2) people at least 2 years old with moderately to severely active juvenile idiopathic arthritis, (3) adults with active psoriatic arthritis, (4) adults with active ankylosing spondylitis, (5) people at least 6 years old with moderately to severely active Crohn’s disease, (6) adults with moderately to severely active ulcerative colitis, (7) adults with moderate to severe chronic plaque psoriasis who are candidates for systemic therapy or phototherapy and when other systemic therapies are medically less appropriate, and (8) adults with moderate to severe hidradenitis suppurativa.

May 9: The FDA approved Chiesi Group unit Chiesi Global Rare Diseases and Protalix BioTherapeutics, Inc.’s Elfabrio (pegunigalsidase alfa-iwxj) for the treatment of adults with Fabry disease. A PEGylated enzyme replacement therapy, the agent is a recombinant human α–Galactosidase–A enzyme expressed in plant-cell culture that is designed to provide a long half-life. Recommended dosing is 1 mg/kg via intravenous infusion every two weeks.

May 17: The FDA approved a 40 mg/0.8 mL single-dose autoinjector for Boehringer Ingelheim’s Cyltezo (adalimumab-adbm). The agency initially approved the biosimilar of AbbVie Inc.’s Humira (adalimumab) on Aug. 25, 2017, as a single-use prefilled syringe. The drug is approved for multiple chronic inflammatory diseases. The new pen will be available in two-, four- and six-pack options when the tumor necrosis factor (TNF) inhibitor launches on July 1.

The FDA has so far approved nine biosimilars of AbbVie Inc.’s Humira (adalimumab), and all of them — as well as some others in the pipeline — have settled patent litigation with AbbVie that allows them to launch onto the U.S. markets by a certain date.

But it’s not just the launch dates that are different. Some are low-concentration versions of Humira, while some are high-concentration versions, the latter of which has about 85% of current Humira prescribing. The FDA approved a high-concentration, citrate-free version of Humira in November 2015, but AbbVie waited until July 2018 to launch it. This formulation requires half the volume of drug injected compared with the original formulation, and it has fewer excipients that often cause discomfort when injected, as well as a thinner needle.

The traditional pharmacy benefit market is seeing a challenge to its model from patient-paid prescriptions, contended longtime industry expert Adam J. Fein, Ph.D., CEO of Drug Channels Institute, during a recent webinar. While some generics of specialty drugs are being sold via these routes, the potential exists for disruption in crowded biologic-treated classes facing a lot of competition, particularly via biosimilars.

And with some industry developments such as the Inflation Reduction Act likely to impact the uptake of high-price/high-rebate drugs, patient-paid prescriptions could become an even bigger disruption within the market than they already are.

Merck & Co., Inc. filed a lawsuit on June 6 against the federal government, seeking to halt provisions in the Inflation Reduction Act (IRA) related to Medicare drug price negotiations. The suit, filed in the U.S. District Court for the District of Columbia, is the first involving a pharmaceutical company challenging that part of the IRA. Starting in 2026, the government for the first time will negotiate the price of certain high-cost medications that are not subject to generic or biosimilar competition. Merck contends in its lawsuit that the drug price negotiation program “is a sham” and “is tantamount to extortion” and violates the First and Fifth amendments to the U.S. Constitution.

A Massachusetts resident last month sued CVS Health Corp. for using an artificial intelligence (AI) platform during a job interview, the Boston Globe reported. In the class-action lawsuit, Brendan Baker alleged CVS’s use of the HireVue AI system to assess job candidates’ honesty violated Massachusetts law, which forbids employers from using a polygraph or similar tests as a condition of employment. Companies such as T-Mobile and Delta Airlines have used HireVue.

Since the FDA’s approval of the first biosimilar in 2015, the agency has approved almost 40 more agents. However, their adoption in the U.S. market has been slow. A recent study, published in the journal BioDrugs, found that biosimilars were covered more restrictively than their reference biologics in 19.4% of coverage decisions made by select commercial health plans.

The study examined 1,181 coverage decisions made by 17 commercial health plans as of August 2021 from the Tufts Medical Center Specialty Drug Evidence and Coverage database, which included 19 commercially available biosimilars for seven biologic reference products used in treating 28 conditions.